Stair tread and holder



Dec. 10, 1929. c, JACQUES 1,738,775

STAIR TREAD AND HOLDER Filed Nov. 28. 1927 Patented Dec. 10, 1929 wears 9- .JeQ-QHES. 9.? 3 3mm NEW YORK s'mm remap am HOLDER Application filed November 28 1927. Serial No. a3 @216.-

T s en ion ela es. 9: mpr vements i air treads and s des gned 9 e evi le a tr ad o r ct n n. u i fo m hlCl be ea ily pp e to a sta r step. t Su ta le means to;

a e ynd de a llahly etain t n pes t ea The stair tread of this invention is pref.-

ra ly med of suit b e fi xih emat i l, s ch ubbe be provi a s para e tread m m f r a h st p, havi g t e f ce en- 10 eas ng he t p f r ed er gripp n mp rowi th st p s i will bere a ned i p c durin us a d w c Pro d with sui abl h lders ,clet c ably secu d to the i e for P iti n and holdin th tr ad.

1 embers 5 P iti n Q11 6. .9 .1 ep, ae f r fiec iv ly eta in th m .1 al gned, sym+ metrical la i n 92 a s airy;

he ie e ee i a so design t0 pro ide.

a fl b e sh et ma erial trea in mbe w t 29 suitable holders, having angular extens ons arme w th sl ts t elet-acbahlv re iv the mile en lie te he ri e s f a s airway, and

to permit relative adjustment-of a limited.

hara ter s h t ea h t ee-d, memb r may b l ne w h he eth r trea mem e 01 t Seaw y. we in whi h the tud ve nter ack ng mine ien with t holders-no mal y P WeI i is eta m et of th tre members rq tl e Sta rs e erti' ex ludes eemer s o h featureswhich are more clearly pointed out in the following descriptiorrand claimsdimete t the p efe red e msef 'eons rue sex it be g JEIQQlT-SPQQQ, hewever, that va 1 s qh nge h size, shape mea of parts he; without d parts Fig; 3 i aw-ve tical, trans erse settler e1 eraelrawee as? i l steer-"see Hilde? were cent riser showing how the holder member secures the tread memberto the riser.

Fig. ,4 is a transverse, sectional View through a portion of a tread member and associated holder in which the holder is sec uredto the tread member by embedding it i the material of the tread member.

Fig. '5 is an enlarged, detailed elevation of a holder member constructed as shown in Fig. 1

Fig. (i is aview similar to. Fig. .5of'one of the holder members as illustrated in big. 7; an enlarged, bottom plan view :of, one corner portion of a tread member show: ing the manner of forming the bottom sour: a-ce ther of r IuFigs. 1 and Z, 1 illustrates the steps of a suitable stairway, and 2 the I'iSers; i i The tread member ofthis invention is indi-.

cated the numeral -3 ar d'is preferably in the o m of ubb sheet havingt etread surface or uppersurface thereof provided w th l n al co rugat ons r bs t e in a no slippine stirew g ne a y n icated at 4. lhe bottom faces ofthese tread m er 3 are preferably erme h a 1 w rality. of recesses 5 topro vid e suction-cups or the like iri order thatthe lowerf-ace of each I tread member will have a gripping coopera- 9 tion with the steps 1 By'thisconstruction these flexible sheets will normally tend to re-- tain their positiou on the steps against displacement luring use.

Holder members 6 are n'E esdwhi a e med. fme l. plates having a base portion 7 anda laterallyv extendingifianee he b se pertien is secured under the edge of the tread member 3 y tab iv t o th ils indi at d a i n F Th se w members. be held in positioii by oneholder member 6 as shown in Fig. 1, if desired, iii which case e holdermber i 'p e d n he central p t n Qf he re ed o the tr ademme e upwa dly ext n n l e al- 8 1s prev d d i a ey ole s o having t e n ar m a "the, o er end t eeeire e d e stud 9 11-..:T i$l%l l1 ll'i-S m in eld iii the. 293"? the of Pr v ded show the step a sufficient distance that it will engage in the upper end of the slot when the holder member and the tread member are placed in the proper operative position on the step. In this position the head will engage I the step. In this way, the edge of the tread member engaging thegriserfwill prevent any tendency of the same to slide transversely of the step whilethe holder member 6 willefiectively retain the tread member to prevent the rear edge from moving away from the riser and also prevent longitudinal movement of the tread member on the step.

.As an individual uses the steps equipped with this invention as above described, the pressure of the foot engaging the tread member will cause the suction cups 5 to engage and have gripping cooperation with the step so that any twisting of the foot or other movements thereof imparted 'to the tread member will be prevented from causinga movement of the tread member'on the step,

and an additional holding action will be exerted on the tread member by the holder 6 with the cooperation of the rear edge of the tread member withtheriser. In this way,

the holder 6, the'cups 5 and the 'rear edge of the tread member engaging the riser cooperate to effectively prevent movement of the tread member during use thereof on the step.

In order to prevent accidental disengagement of the holdersfrom the studs, and also where substantially long tread members are used for relatively wide steps, it is desirable to employ more than one holder, and in this case a construction similar to that shown in Fig. 2 is'preferably used. 7 The holders shown in Figs. 2 and 6 are indicated by the numeral 12 and are substantially similar in form to theholders 6 having the base portions 13 and i the upwardly extending lateral fla11ge:por-

tions'l l. 'The flange port-ions 14 are formed with'T-shapedslots 15 having the lower end of the stem portion of the slotsenlarged as indicated at 16 to receive theheads of. studs 17. 1h the construction shown in @Fig. i 2 a pair of holders are used which have base flanges 13 rivetedor otherwise secured adjacent-the ends. oftread'meinber 3.along the rear edge thereof. "More than two of these holders may be used if desired The tread members andthe holders are mounted on the step and riser in exactly thesame manner as the "structure" shown in Fig. 1, with the additional feature of" obtaining an inter-- locking action between studs 17 andholders 12 t'oxprevent accidental disengagement of necessary to engage one of the holders with one of the studs at a time, shifting the tread member laterally a slight distance to permit the engagement of the other "holder with its stud.- In engaging or disengaging these holders: with the studs, it will therefore be seen that the tread member must be moved topermit their independent engagement and disengagement, one at a time, and that in thesecured positionshownin Fig. 2 studs 17 are out of alignment with the stem or vertical portions of'slots 15 so that the holders can not be moved upwardly on the studs-t0 permit the heads to move through enlargement 16 0f the slots, which is necessary for either engagement or. disengagement of the holders therefrom. Should persons, in using a stairway'equipped with the construction shown in Fig.-2,'kick' the edges of the tread members causing them to buckle which would produce a shifting action or elevate the holders, it will b-e'seenthat the'interlockin actionobtained by the T-slots and the re ativ'ely ofli set studs 17 'willprevent any shifting or raising of the holders and'effectivel'y retain-the tread member in place so that it will immediately seek its normal, flat'position on the stair step. Theprovision. of T-slots also permits of a slight shifting of the tread members along the steps which will compensate relation. It is to be understood that the holders :12 may be formed in novel designs and shapes other than those illustrated in the drawing" in order to provide a decorative effect on'the ioo ids

stairway, if desired, andto enhance the appearance of the invention when applied to a stairway in addition to the special features above set forth. I

The holders may alsobe formed the time of forming the flexible tread members I 3 by embedding the base portion in the tread 7 member as shown in Fig. 4.- In this figure the tread member is indicated at 18 Whilethe' holder member is illustrated at'19, having I the base portion 20 molded into the body of the tread member. Any other method of securing the holders to the tread members which is desirable may be used, within the scope of this invention. From the above description understood that :the, special construction of the tread member of, flexible sheet rubberor the like, .to provide special. gripping action.

it is to be between the bottom face andthe step, to

gether with the provision of the holders ta: aged With the'studs on the riser, produces 3; novel'combination in which. the several fee;

tures cooperate in effectively retaining the tread member in its proper operative position on a stairway under all conditions of use.

What is claimed is: 1. A stair tread assembly comprising a step having a tread and a riser, a tread sheet of rubber material disposed on the tread, said sheet being unconfined along its edges, a metallic fastener along the edge of the sheet adjacent the riser and secured to the sheet, a unitary flange on the fastener extending at right angles to the sheet and abutting the riser, said flange being formed with an elongated slot having a circular screw head receiving portion, and a screw passing through the slot at a point remote from the circular portion thereof and entering said riser.

2. The combination with a stair step of a rubber tread and securing means therefor, said tread comprising a sheet of rubber having a friction surface on its upper face and a suction surface on its lower face adapted to grip the stair, and fastening means secured to and engaging one edge portion of the sheet and said stair, said fastening means comprising a metallic plate formed wlth an elongated slot having an enlarged circular screw head receiving portion merging into a narrow screw head engaging portion, anda screw passing through the slot at a point remote from the circular portion thereof and entering said stair.

JOSEPH C. JACQUES. 

